flexible joint

漢語翻譯

英文解釋：

名詞 flexible joint:

1. a joint that holds two parts together so that one can swing relative to the other
   同義詞：hinge

例句：

1. Having unusually flexible joints, especially of the limbs or fingers.
   雙關節的尤指四肢或手具有異常柔韌關節的